The ownership of Strážky Mansion was transferred to the Slovak National Gallery after the death of its former owner, Baroness Margita Czóbel in 1972. The SNG subsequently carried out its reconstruction, together with the renovation of the 19th century English park, where it installed an exposition of 20th century sculptures.

The permanent expositions are situated on its exhibition premises where various musical, theatrical and educational events are also held. Permanent expositions feature the paintings of Ladislav Mednyánszky, portrait paintings from the Spiš region, collections of the historical library and the mansion furniture.